Firms and investors often react to financial news on social media. However, how they react to news of different nature and whether their reactions can influence the stock market are far from clear. Employing data of financial news, tweets posted by firms and investors, and daily stock prices, we...

Widespread abuse of internet users’ privacy online has prompted user advocacy groups to implore governments to intervene and protect consumer rights. To study such interventions’ effects, we examine data-protection policies that policy makers and governments can enforce on websites,...